A roller coaster enthusiast named Pat McCabe reviewed the new Dark Knight ride at Six Flags Great Adventure (New Jersey) Six Flags Great America (Chicago) on his blog A Walk In The Park.
He enjoyed the highly-themed line and the preshow room which includes a press conference with Harvey Dent. He says that the ride is enjoyable, but he makes the point that older riders might feel a tad ripped off, which I suspected back when we first heard the details of the ride.
Go check out Pat’s review of The Dark Knight coaster. He also has several pictures of the themed line and the subway-themed cars.
Release Date 11/28/2008 
Actually, the review is of th Six Flags Great America (outside Chicago) version of the ride. But from everything I have heard the two are just about exactly the same.
Hey Pat, thanks for the correction. I’ve fixed it in the post.